Big bang crossword

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Across
  1. 5. anelementthatmakesupasubstance
  2. 8. thedistancebetweenwaves
  3. 10. amoloculecomposedofoneatom
Down
  1. 1. protons,neutrons,electrons
  2. 2. strangestaticwaves
  3. 3. hugecollectionofstars
  4. 4. thetheorythattheearthisexpanding
  5. 6. largeballsofhotglass
  6. 7. spaceandalltheenergyinit
  7. 9. scalethatshowsdifferentoflife